Hi I'm going to a tiger reserve in india next week, want a few tips on wildlife photography. some might be silly questions, but want to cover all bases!

Using a canon 7d with 18/200 lens (that's all I have in telephoto)
1) to take pictures of fast moving animals/birds what metering/af mode should I keep the camera on. I know it should be set on AF servo, but what focus points, single or area or automatic selection?

In short, you just need to have adequate shutter speed to prevent subject motion blur unless you want to do that for artistic effect. If they're slow moving 1/500 or even longer perhaps to 1/200 is ok. If they are really fast, turn it up to 1/1000 or beyond.

If you're happy with the lens performance wide open, just go into Tv mode with auto-ISO and set a shutter value so you're happy. If you have the light, need or want to stop down the lens for sharpness or extra depth of field, you can either set aperture priority, and fix the ISO to give adequate shutter speeds. Alternatively fix everything in manual, which works best if the light and subjects don't change.

Focus points depends on how you work and the subjects. For bigger targets multi-point is ok, but do watch out it doesn't drift off onto something else. If the background or foreground is messy it can distract the AF system. You might want to switch to single point (or small point) if you need to precisely focus on a point.